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W. A.- WHEELER.

, EDGE CURLING MACHINE. No. 316,711. 12116111611 Apr. 28, 1885.

(No Model.) 3 Sheets-Sheet 2. W. A. WHEELER.

EDGE GURLINGMAGHINE.

No. 316,711. Patented Apr. 28, 1885.

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'W. A. WHEELER. EDGE GURLING MACHINE.

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WILLIAM A. WVHEELER, OF INDIANAPOLIS, INDIANA.

EDGE-CURLING MACHINE.

SPEGIE'ICATIQN forming part of Letters Patent No. 316,711, dated April 28, 1885.

Application filed February 16, 1885. (No model.)

. To all whom it may concern:

' accompanying drawings, in the several figures Be it known that LWVILLIAM AJVHEELER, a resident of Indianapolis, Marion county, Indiana, have made certain new and useful Improvements in Edge-Curling Machines, a description of which is set forth in the following specification, reference being made to the of which like letters indicate like parts.

My invention is designed to curl over the edges of sheet-metal pipes which have been previously flanged by other machines, the object being to form a double seam where the sections of pipe are united, as for making stove-pipe elbows, and will be understood from the following description.

In the drawings, Figure 1 represents a side view of the machine; Fig. 2, a front view; Fig. 3, a detail view of the revolving head or chuck with the grooved rollers inserted, the rollers and chuck-head being in horizontal section, the dotted lines indicating the position of the chuck when the rollers are in contact with the flange of the pipe-section. Fig. at is a detail view of the faceplate, the inclined disk, and guide-plate and their connections, the inclined disk being in crosssection. Fig. 5 is an end view of the stubaXle and the eccentric axle, upon which the grooved rollers are mounted; and Fig. 6 is a side view of the same, showing the collar and pin which secure the grooved rollers upon the eccentric axle. Fig. 7 is a longitudinal section on the line a 00, Fig. 1. Fig. 8 is a rear view of the arm ca. Fig. 9 is a vertical section of the parts shown in Fig. 4:. Fig. 10 is a side View of the sleeve with portions of the guide and face plates, showing the slot in which the pin p moves. Figs. 3, 4, 5, 6, 7, S, 9, and 10 are drawn upon a larger scale than Figs. 1 and 2.

In detail, b is acast-iron base supporting an upright hollow shaft, hs, branched at the top into brackets br hr, the arms of which brackets provide bearings on the one side for the driving-shaft do, which carries the cone-wheel cw, and on the other side for the vertical shaft 8, which carries the cone-wheel cw and the chuck ch with its grooved rollers gr.

lp is a loose, and dp is a driving, pulley mounted on a short shaft having bearings in two uprights connected with the extension of the base, and g g are two bevel gear-wheels, the one mounted 011 the shaft of the drivingpulley, and the other on the lower end of the driving-shaft ds, adapted to mesh with each other, sothat the revolution of the drivingeach side of the collar 0, and a pivot, 1, is

passed through all, including the shaft 5. A short arm, a, is pivotedto arm a and to aprojection below the bracket br, as shown. When i the treadle 15 is pressed down with the foot, it forces up the long arm inside the hollow shaft hs and drops the arm a, which forces the chuck ch with its rollers down toward the guideplate gp, as shown in dotted lines in Fig. 3, bringing the grooves of the rollers upon the edges of the pipe'section, the pressure being brought to bear by means of the treadle t, curling the edge of the pipe over, as shown in the dotted linesin Fig. 4..

Upon the lower end of the shaft sis secured a chuck, ch, which has openings bored in its periphery of sufficient depth to receive the stub-axles so, and the end of these stub-axles is turned so as to formasmaller axle, ec,whose center is not in line with the center of the stub-axle, but is eccentric in relation thereto, as shown in Figs. 5 and 6. This eccentric axle ea carries the grooved rollers gr, which are secured thereon by means of a small collar and pin, as shown in Fig. 6. These rollers have several circumferential grooves to accommodate the different sizes ofpipe--as, for instance, four, five, six, and seven inch pipea.nd may be constructed to fit any desired size of pipe. The stub-axles so are secured in the sockets of the chuck by set-screws ss, and the object of making the axle ea eccentric in relation to the stub-axle 866 is to secure the vertical adjustment of the grooved rollers, as the set-screw ss secures the horizontal adjustment, for if the axle so be turned round in its socket it will secured thereon by means of a nut. This standard is inclosed in a sleeve, 81, having a spring, sp, coiled around the same. A small pin, 19,, connected to the standard, passes through a slot in the sleeve and over the top coil in the spring sp, as shown in Figs. 4 and 9.

l are lugs bolted on opposite sides of the face-plate, and between the two, and secured to these logs by pivots 2, is an inclined disk, id, which has an opening in the center to pass over the sleeve and spring, as shown in Figs. 1, 4, and 9. J This inclined disk is intended to form a support for the angular section of the elbow-pipe, which is indicated in position by the dotted lines in Fig. 4. The standard stof the guideplate gp does not extend down through the sleeve as far as the face-platefp, and, being loose in, the sleeve, may be forced a short distance downward when the chuck with its rollers takes the position shown by the dotted lines between Figs. 3 and 4, the elasticity of. the coil-spring tending to throw it back to its normal position, as shown in Fig. 4, when the pressure of the chuck is removed. The position of the arm a when the chuck is forced down is indicated by the dotted lines in Fig. 3.

The machineoperates as follows: The pipesection is placed. over the guide-plate 9 its angular side resting upon the inclined disk id, as indicated by the dotted lines in Fig. 4. The upper edges of this pipe-section have been previously bent over at substantially a right angle to the sides of the pipe by means of the machine shown in Letters Patent No. 224,974,

issued to me February 24, 1880. The pipe being now in position, as shown, the operator steps upon the treadle, forces the chuck with its rollers down upon the edges of the pipe, the guide-plate gp being forced down a short distance, so that the edges of the pipe will extend above it, and, all being in readiness, he throws the belt over to the driving-pulley. The chuck, with its rollers, revolves rapidly, and, forcing it still farther downward with his foot by means of the treadle, the flanged edge is curled over into a hook shape between the proper grooves on each side, as shown in Fig. 4. When it has reached the limit of the gage previously set, which is determined by the distance that the collar 0 is set above the top of the bracket br on the shaft 8, the pressure on the treadle is'removed, the chuck is lifted, the pipe-section taken off and a new one put seaming-machine shown in Letters Patent No.

254,891, issued to me March 14, 1882.

What I claim, and desire to secure by Let ters Patent, is the following:

1. The combination of the base I), the hollow standard hs, provided with arms, the vertical shaft 8, having bearings in such arms, the chuck ch, mounted on such shaft, and the grooved rollers gr, mounted on the axle ea of the stub-axle sa, which stub-axle is adapted to fit in openings in said chuck, all combined substantially as described.

2. The base 12, the hollow standard hs, providing bearings for a shaft carrying the chuck ch, having openings to receive the stub-axles, upon which the grooved rollers gr are mounted eccentrically, as shown, and the treadle t, having arm and lever connections for raising and lowering the shaft 8, all combined substantially as described.

3. The chuck-head ch, having openings to receive the stub-axles sa, provided with eccentric axles ea, and the grooved rollers gr, mounted on such eccentric axles, all combined substantially as described.

4. The face-plate fp, having standards connected therewith, the inclined disk id, having pivotal bearings in such standards, the guideplate 919, mounted on the upper end of the standard st, provided with the pin 1), which is surrounded by a sleeve having a slot to receive such pin, and a coil-spring pressing against such pin passing through an opening in the inclined disk id, the whole connected to the hollow standard hs, all combined substantially as described.

5. The base I), supporting the hollow standard hs, having armsfor carrying the shaft 8 in bearings therein, the chuck-head ch, connected with such shaft, the grooved rollers gr, mounted on eccentric. axles connected with such chuck, the face-plate fp, provided with standards for carrying the inclined disk id in bearings therein, the guide-plategp, for guiding the pipe-section, the standard st, having the pin 19, connected with such guide-plate passing through the inclined disk and surrounded by the sleeve 81, slotted to receive the pin 1), and the spring 819, pressing against such pin, the clamp-arm ca, the treadle t with its arm and lever connections to the shaft 8, and driving mechanism, all combined substantially as described.

6. The stub-axle sa, having the eccentric axle ea connected therewith, in combination with the grooved rollers yr, for curling the IIO pipe-edge mounted thereon, substantially as mounted on the upper end of the standard st, l rounded by a coil-spring pressing against the provided with the pin 10, the sleeve 81, slotted to pin p, which passes through an opening in an receive the pin 19, and the coil-spring sp, pressinclined disk having bearings in arms at the 15 ing against such pin, the sleeve and its spring I opposite sides thereof, the whole connected 5 passing through openings in the inclined disk, with a support, all combined substantially as the guide-plate and disk having connections described.

to an arm and supporting-standard, all com- In witness whereof I have hereunto set my bined substantially as described. hand this 12th day of February, 1885.

8. The guide-plate 9p, mounted on the up- WILLIAM A. WHEELER. 10 per end of the standard st, provided with a Witnesses:

pin, p, moving in the slot of a sleeve, 82, in p O. P. JAcoBs,

which the standard slides, the sleeve sur- W. E. BARTON. 

